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Science Benchmark Review Worksheet

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  • Which side of the formula are the reactants?
    Left
  • What is Conduction?
    The transfer of heat through direct contact.
  • True or False: When a substance changes from gas to liquid to solid the molecules release heat energy.
    True
  • What are Electron Shells?
    Regions around the nucleus containing electrons.
  • What is the definition of mass?
    The amount of matter in a substance.
  • True or False- Dissolving lemonade mix into water is an example of a chemical change.
    False! Chemical changes include: burning wood, rusting, digesting food, souring milk,
  • What is a Dependent Variable?
    The variable that gets measured in an experiment.
  • What is a control group?
    A control group is a group of subjects in an experiment that do not receive the treatment being tested
  • Where do you read the level of a liquid in a graduated cylinder?
    25 mL if the meniscus is at that level.
  • What is a valence electron?
    An electron in the outermost shell of an atom.
  • What happens to the vibration of molecules when they get hot?
    The vibration INCREASES
  • What is the Energy conversion when a Book falls off a desk?
    Potential to kinetic.
  • Which type of rays are considered the most dangerous?
    Gamma Rays are considered the most dangerous type of electromagnetic radiation because they carry the most energy.
  • What is the primary Method of Heat Transfer in Boiling Water?
    Convection.
  • What is a series circuit?
    A circuit that only has ONE path for electricity to flow.
  • What tool is used to measure mass?
    Triple-beam balance.
  • How is the Periodic table arranged?
    Elements on the periodic table are arranged by increasing atomic number.
  • What is the energy Transformation in Flashlight?
    Chemical to electrical.
  • What is the direction of Heat Movement?
    From warmer to cooler.
  • What is Refraction?
    The bending of light when it passes from one medium to another.
  • Transverse wave
    A wave that vibrates perpendicular to the direction of the wave's travel.
  • What is an Independent Variable?
    The variable that is manipulated (changed) in an experiment.
  • Noticing that the leaves on the trees are turning yellow is an observation? True or False?
    True
  • How do you calculate Density?
    D=m/v
  • What is absorption?
    The light ray striking the object is taken in by the object.
  • Define Conservation of Mass?
    Mass cannot be created nor destroyed, only transformed.
  • Best Thermal Conductor
    metal
  • Longitudinal wave
    A wave that has vibrations parallel to the direction of the wave's travel.
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